Durham Threshold Days by Year (CA006112171)

16 fixed thresholds counted per year at Durham (CA006112171): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Durham Thresholds

Durham: days with 10 cm (3.9 in) or more of snowfall in 47 years, most in 1883 with 27.
Durham: days with a maximum temperature at or below 0 C (32 F) in 45 years, most in 1885 with 106.
Durham: nights with a minimum temperature at or below 0 C (32 F) in 45 years, most in 1956 with 187.
Durham: nights with a minimum temperature at or below -10 C (14 F) in 45 years, most in 1883 with 88.
16 fixed thresholds have at least one qualifying day at Durham.

Days at or above 30 C (86 F)

43 years with a qualifying day

Days per year at Durham with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 35 in 1955.

Days at or above 30 C (86 F) per year at Durham
Year	Days	Decade average
1883	1	8.9
1884	18	8.9
1885	4	8.9
1886	11	8.9
1887	17	8.9
1888	6	8.9
1889	5	8.9
1890	3	10.8
1891	5	10.8
1892	8	10.8
1893	8	10.8
1894	17	10.8
1895	22	10.8
1896	15	10.8
1897	10	10.8
1898	11	10.8
1899	9	10.8
1900	15	15
1936	28	28
1948	12	17
1949	22	17
1951	3	10.4
1952	16	10.4
1953	12	10.4
1954	3	10.4
1955	35	10.4
1956	4	10.4
1957	4	10.4
1958	6	10.4
1959	11	10.4
1960	7	7.7
1961	2	7.7
1962	11	7.7
1963	11	7.7
1964	13	7.7
1965	2	7.7
1970	1	7
1974	8	7
1975	8	7
1976	5	7
1977	13	7
1981	2	6
1983	10	6

For each year, a bar from the first to the last day at Durham meeting 30 C (86 F).

First to last qualifying date each year at Durham
Year	First date	Last date
1883	1883-08-22	1883-08-22
1884	1884-06-17	1884-09-10
1885	1885-07-27	1885-09-28
1886	1886-06-15	1886-09-07
1887	1887-05-21	1887-09-13
1888	1888-06-17	1888-06-22
1889	1889-05-18	1889-09-10
1890	1890-07-13	1890-08-03
1891	1891-06-14	1891-09-24
1892	1892-06-12	1892-08-18
1893	1893-06-18	1893-08-11
1894	1894-06-14	1894-09-03
1895	1895-05-04	1895-09-22
1896	1896-05-09	1896-08-11
1897	1897-07-02	1897-09-09
1898	1898-07-02	1898-09-03
1899	1899-06-05	1899-08-31
1900	1900-06-26	1900-09-11
1936	1936-05-09	1936-09-15
1948	1948-06-02	1948-09-05
1949	1949-06-11	1949-08-27
1951	1951-07-25	1951-08-30
1952	1952-06-24	1952-09-14
1953	1953-06-20	1953-09-04
1954	1954-06-14	1954-08-23
1955	1955-06-18	1955-09-19
1956	1956-06-12	1956-06-15
1957	1957-06-16	1957-07-21
1958	1958-07-27	1958-08-12
1959	1959-06-09	1959-09-09
1960	1960-07-29	1960-09-08
1961	1961-07-23	1961-09-03
1962	1962-05-15	1962-08-30
1963	1963-06-26	1963-07-28
1964	1964-06-09	1964-07-28
1965	1965-06-28	1965-08-06
1970	1970-07-29	1970-07-29
1974	1974-07-04	1974-08-22
1975	1975-05-24	1975-08-02
1976	1976-06-13	1976-09-08
1977	1977-05-20	1977-08-28
1981	1981-06-15	1981-07-07
1983	1983-06-13	1983-09-10

Every Fixed Threshold

Fixed thresholds at Durham
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	43	35	1955	10
35 C (95 F): Days	6	6	1936	3
90 F (32.2 C): Days	29	23	1955	2
100 F (37.8 C): Days	1	1	1936	1
0 C (32 F): Ice days (max	45	106	1885	72
0 C (32 F): Frost days (min	45	187	1956	168
-10 C (14 F): Days with min	45	88	1883	47
-20 C (-4 F): Days with min	45	32	1885	10
-30 C (-22 F): Days with min	18	5	1948	2
20 C (68 F): Tropical nights (min	35	9	1936	5
10 mm (0.39 in): Days with 10 mm or more rain	43	56	1883	34
25 mm (0.98 in): Days with 25 mm or more rain	43	14	1885	5
50 mm (1.97 in): Days with 50 mm or more rain	24	3	1887	1
10 cm (3.9 in): Days with 10 cm or more snowfall	47	27	1883	7
25 cm (9.8 in): Days with 25 cm or more snowfall	25	4	1893	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1891	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1883.

Download the Data

Data for Durham threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Durham Threshold Days by Year (CA006112171)

Key Facts for Durham Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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